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KVM: x86: check for nEPT/nNPT in slow flush hypercalls

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Checking is_guest_mode(vcpu) is incorrect, because translate_nested_gpa()
is only valid if an L2 guest is running *with nested EPT/NPT enabled*.
Instead use the same condition as translate_nested_gpa() itself.

Cc: stable@vger.kernel.org
Reviewed-by: Sean Christopherson <seanjc@google.com>
Fixes: aee738236d ("KVM: x86: Prepare kvm_hv_flush_tlb() to handle L2's GPAs", 2022-11-18)
Link: https://patch.msgid.link/20260503200905.106077-1-pbonzini@redhat.com/
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Paolo Bonzini
2026-04-27 14:25:40 +02:00
parent 39f1c201b9
commit 464af6fc2b
1 changed files with 1 additions and 1 deletions
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2
arch/x86/kvm/hyperv.c
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@@ -2040,7 +2040,7 @@ static u64 kvm_hv_flush_tlb(struct kvm_vcpu *vcpu, struct kvm_hv_hcall *hc)
* flush). Translate the address here so the memory can be uniformly
* read with kvm_read_guest().
*/
if (!hc->fast && is_guest_mode(vcpu)) {
if (!hc->fast && mmu_is_nested(vcpu)) {
hc->ingpa = translate_nested_gpa(vcpu, hc->ingpa, 0, NULL);
if (unlikely(hc->ingpa == INVALID_GPA))
return HV_STATUS_INVALID_HYPERCALL_INPUT;